I have a Whirlpool window ac. The filter is some type of mesh.

It has no frame--just a piece of this material that you can vacuum or wash. I found an old ac that had this material w frame. So I cut it to fit. But I need a new one.I called Whirlpool and this little piece of material costs $52.00.I was thinking that maybe someone sold this type of material for other various uses.